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Louis-Jacques-Mandé Daguerre (November 18, 1787 – July 10, 1851) was the French artist and chemist who is recognized for his invention of the Daguerreotype process of photography. He was born in Cormeilles-en-Parisis. He experimented on making pictures from 1824, showing dioramas around France, England and Scotland. A few years after Nicéphore Niépce produced the world's first photograph, the two men started a four-year cooperation until Niépce's sudden death in 1833. The main reason for the "partnership", as far as Daguerre was concerned, was connected to his already famous Dioramas. The Diorama was a cleverly lit scenario that by manipulation of lights in darkness came alive. The Diorama was a great success but Daguerre was not a gifted artist and the production of the scenes took time. Daguerre thought that the process developed by Niepce could help speed up the Diorama creation. Niepce was a printer and his process was based on a faster way to produce printing plates. Daguerre announced the latest perfection of the Daguerreotype, after years of experimentation, in 1839, with the French Academy of Sciences announcing the process on January 9 of that year. Daguerre's patent was acquired by the French Government, and, on August 19, 1839, the French Government announced the invention was a gift "Free to the World." However, Daguerre himself registered the patent for England on August 12, and this greatly slowed the development of photography in Great Britain. Antoine Claudet was one of the few people legally able to take daguerreotypes there. The work on the Daguerre process was matched by Fox Talbot in England. Both men knew that they were working on a process that would revolutionise the art world. The Grand Tours which were so popular were illustrated by drawings of scenes and the "photographic" process would improve the quality and ease of which these popular holiday memories could be produced. Daguerre was not aware of the exact process Fox Talbot was working on. To protect his own invention Daguerre patented his process. Because Fox Talbot was an unknown competitor Great Britain was to be the only place the Patent was enforced. Daguerre was granted a pension by the French government for his work and did not need to make money from the invention to live. Fox Talbot spent a considerable amount of money on his invention/process (est £5,000 in 1830's money) and was keen to recover the costs which the Daguerre patent blocked. The first permanent photograph was made in 1826 by Joseph Nicéphore Niépce, building on a discovery by Johann Heinrich Schultz (1724): a silver and chalk mixture darkens under exposure to light. Niépce and Louis Daguerre refined this process. Daguerre discovered that exposing the silver first to iodine vapour, before exposure to light, and then to mercury fumes after the photograph was taken, could form a latent image; bathing the plate in a salt bath then fixes the image. These ideas led to the famous Daguerreotype. The Daguerre process exploits and extends a discovery by Johann Heinrich Schultz (1724): expose a mixture of silver and chalk to light, and it will darken. Daguerre first exposed copper plates to iodine, obtaining silver iodide. Then he exposed them to light for several minutes. Then he coated the plate with mercury vapor heated to 75 degrees Celsius, to amalgate the mercury with the silver, finally fixing the image in salt water. The resultant plate produced a mirror like exact reproduction of the scene, usually a portrait (the rarer views are much sought after and are more expensive). The portrait process took several minutes but the time reduced with the "faster" lenses such as the Petzval first mathematically calculated lens. The image was a mirror of the original scene. The image could only be viewed at an angle and needed protection from the air and finger prints so was encased in a glass fronted box. Some ambrotypes were passed off as Daguerreotypes by being placed in these type of boxes. But the process was cheaper involving a weakly developed negative being placed on back card or paper to appear as a positive. Tintypes also were "boxed" as Daguerrotypes. Samuel Morse was astonished to learn that Daguerrotypes of streets of Paris did not show any humans, until he realized that due to the long exposure times all moving objects became invisible. The Daguerreotype was the Polaroid of the day, producing a single image which was not reproducible. Despite this major drawback millions of Daguerreotypes were produced. The system was not capable of reproduction, unlike the Talbot process; by 1851 when Daguerre died the Fox Talbot negative process was refined by the development of the wet collodion process, whereby a glass negative enabled a limitless number of sharp prints to be made. These developments made the Daguerreotype redundant and the process disappeared very quickly. Though Daguerre obtained a pension from the Government, despite his contribution, Niépce did not . Eventually his son fought for and won a pension from the government recognising his father's work. Daguerre died on July 10, 1851 in Bry-sur-Marne, 12 km from Paris. A fine monument marks his grave there. This article or section does not cite its references or sources. You can help Wikipedia by introducing appropriate citations. Louis Daguerre Louis-Jacques-Mandé DaguerreLouis-Jacques-Mandé Daguerre (November 18, 1787 – July 10, 1851) was the French artist and chemist who is recognized for his invention of the Daguerreotype process of photography. He was born in Cormeilles-en-Parisis. He experimented on making pictures from 1824, showing dioramas around France, England and Scotland. A few years after Nicéphore Niépce produced the world's first photograph, the two men started a four-year cooperation until Niépce's sudden death in 1833. The main reason for the "partnership", as far as Daguerre was concerned, was connected to his already famous Dioramas. The Diorama was a cleverly lit scenario that by manipulation of lights in darkness came alive. The Diorama was a great success but Daguerre was not a gifted artist and the production of the scenes took time. Daguerre thought that the process developed by Niepce could help speed up the Diorama creation. Niepce was a printer and his process was based on a faster way to produce printing plates. Daguerre announced the latest perfection of the Daguerreotype, after years of experimentation, in 1839, with the French Academy of Sciences announcing the process on January 9 of that year. Daguerre's patent was acquired by the French Government, and, on August 19, 1839, the French Government announced the invention was a gift "Free to the World." However, Daguerre himself registered the patent for England on August 12, and this greatly slowed the development of photography in Great Britain. Antoine Claudet was one of the few people legally able to take daguerreotypes there. The work on the Daguerre process was matched by Fox Talbot in England. Both men knew that they were working on a process that would revolutionise the art world. The Grand Tours which were so popular were illustrated by drawings of scenes and the "photographic" process would improve the quality and ease of which these popular holiday memories could be produced. Daguerre was not aware of the exact process Fox Talbot was working on. To protect his own invention Daguerre patented his process. Because Fox Talbot was an unknown competitor Great Britain was to be the only place the Patent was enforced. Daguerre was granted a pension by the French government for his work and did not need to make money from the invention to live. Fox Talbot spent a considerable amount of money on his invention/process (est £5,000 in 1830's money) and was keen to recover the costs which the Daguerre patent blocked. The first permanent photograph was made in 1826 by Joseph Nicéphore Niépce, building on a discovery by Johann Heinrich Schultz (1724): a silver and chalk mixture darkens under exposure to light. Niépce and Louis Daguerre refined this process. Daguerre discovered that exposing the silver first to iodine vapour, before exposure to light, and then to mercury fumes after the photograph was taken, could form a latent image; bathing the plate in a salt bath then fixes the image. These ideas led to the famous Daguerreotype. The Daguerre process exploits and extends a discovery by Johann Heinrich Schultz (1724): expose a mixture of silver and chalk to light, and it will darken. Daguerre first exposed copper plates to iodine, obtaining silver iodide. Then he exposed them to light for several minutes. Then he coated the plate with mercury vapor heated to 75 degrees Celsius, to amalgate the mercury with the silver, finally fixing the image in salt water. The resultant plate produced a mirror like exact reproduction of the scene, usually a portrait (the rarer views are much sought after and are more expensive). The portrait process took several minutes but the time reduced with the "faster" lenses such as the Petzval first mathematically calculated lens. The image was a mirror of the original scene. The image could only be viewed at an angle and needed protection from the air and finger prints so was encased in a glass fronted box. Some ambrotypes were passed off as Daguerreotypes by being placed in these type of boxes. But the process was cheaper involving a weakly developed negative being placed on back card or paper to appear as a positive. Tintypes also were "boxed" as Daguerrotypes. Samuel Morse was astonished to learn that Daguerrotypes of streets of Paris did not show any humans, until he realized that due to the long exposure times all moving objects became invisible. The Daguerreotype was the Polaroid of the day, producing a single image which was not reproducible. Despite this major drawback millions of Daguerreotypes were produced. The system was not capable of reproduction, unlike the Talbot process; by 1851 when Daguerre died the Fox Talbot negative process was refined by the development of the wet collodion process, whereby a glass negative enabled a limitless number of sharp prints to be made. These developments made the Daguerreotype redundant and the process disappeared very quickly. Though Daguerre obtained a pension from the Government, despite his contribution, Niépce did not . Eventually his son fought for and won a pension from the government recognising his father's work. Daguerre died on July 10, 1851 in Bry-sur-Marne, 12 km from Paris. A fine monument marks his grave there.
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